Gas fueled singeing burner



H. M. HANSON ETAL GAS FUELED SINGEING BURNER April 13, 1954 3Sheets-Sheet 1 Filed June 14, 1950 n M J m K m m w mu; w. .N V W Apnl13, 1954 H. M. HANSON ETAL 2,675,067

GAS FUELED SINGEING BURNER Fi led June 14. 1950 s Sheets-Sheet 2INVENTORS H. M. HANSON EDWARD J. FUNK, JR BY Ap l 1954 H. M. HANSON ETALGAS FUELED SINGEING BURNER 3 Sheets-Sheet 3 Filed June 14. 1950INVENTORJ H. M HANSON EDWARD J. FUNK, JR. 4 y. M

HTI'URNQY Patented Apr. 13, 1954 UNITED STATES PATENT OFFICE GAS FUELEDSINGEING BURNER Hartwig Millard Hanson and Edward J. Funk, Jr.,Baltimore, Md., assignors to The C. M. Kemp Manufacturing Company,Baltimore, Md., a corporation of Maryland Application June 14, 1950,Serial No. 168,096

6 Claims. (01. 158-105) 2 Figure 1 is a front elevational view of theburner.

Figure 2 is an end elevational view thereof. Figure 3 is a partial planview, partly with the No. 2,410,542. It has been found that certainburner bed removed. modifications in the burner there illustrated per-Figure 4 is a partial longitudinal sectional View mit the omission ofthe cumbersome water cooltaken along the line 4-4 of Figure 2. ingprovisions previously found necessary in the Figure 5 is an enlargedfragmentary top plan flame compression type burner. Water cooling isview of the orifice plate and holder. especially uneconomical since aprimary object is Figure 6 is a fragmentary sectional view taken tomaintain a very hot flame, while water-cooled along the line 66 ofFigure 5. edges or guides tend to cool the flame and waste Figure '7 isa transverse sectional view taken heat. along the line 'l'! of Figure 1.

The fabric in this invention may be drawn Figure 8 is a transversesectional view taken across the burner in either direction and inconalong the line 8-8 of Figure 3. tact with metallic guides which arekept ade- In the drawings similar numerals refer to quately cooled byair. The guides are spaced on similar parts in the several views. eitherside from the burner orifices by a pair of The burner beds are made upof refractory beds having refractory surfaces. From the material such asfire bricks l and 2 which are burner orifices a flame from aperfectly'propor preferably trapezoidal in shape as best seen in tionedfuel and air mixture plays on the fabric Figure 7. These are heldbetween the central and is deflected by the fabric in both directionsburner body or body member 3 and the acute over the refractory surfaces.These surfaces are angled guide brackets 4 and 5 having ribs 4 andinclined in opposite directions from the burner 5'. By virtue of thetrapezoidal shape of the orifices toward the fabric forming therewith abricks and the acute angle in brackets 4 and 5, p r f W h p d r Thepressure of the bricks I and 2 are wedged in place firmly. the flame caues e o ases to flow in both The end bars Band I close the longitudinalends directions from the orifices toward the small of the burner betweenbrackets 4 and 5. ends of the We es, h de in rea ing a It will beobserved that the inner end walls 8 rubb n efiect as e gases r fur h rm- .30 and 9 of bricks and 2 rest against substantially pressed 0TConfined b the f this is pec vertical and parallel outer body walls l0and H 3 e 011 t e burner side le d fro t so that the upper refractorysurfaces 12 and I3 center, in the direction of fabric web travel. of thbricks are inclined upwardly away from The fabric, therefore, forms oneside of a large th body 3. combustion chamber solidly filled with flameTh top walls M and I5 of the body, Figure 8, 11111161 p aresubstantially at right. angles to the outer The combustion cha ber on 1y walls H) and H and receive thereon the orifice the nap is not burnedbut is carbonized by the plate 11; hi is ld d by means of hightemperature flame and the resulting Carbon tangularly recessedcombustion chamber mem- S b own way y the Combustion gases as they 40bers or holders l1 fastened by means of screws escape at the side edgesof the fabric. It is the :3 t t body A completely combustible hi h t mpr r f t fl m compressed ture of fuel and air is fed to orifices l9 inthe tween the fabric and the refractory surfaces orifi e plate isthrough fuel chamber 20 and Which is SO e t in Singeing and the 0031-intermediate chambers 2i and 2|. After strikpr sion is re r because fthe Wedge Shape Of ing the cloth the flame travels parallel with it theareas between the refractory bed and the in opposite directions and iscompressed befabric. The metallic supports for the refractory tween thcl th and the refractory surfaces, beds a channelled to minimize theContact of being forced into the pair of wedge-shaped areas the metal,and to permit air to circulate, to dissiby virtue of t positive d t tpressure Date the heat in the bedf; and Supports- TWO under which thegas-air mixture is delivered to burners are generally sed on anysingeing m the combustion chamber, also the travel of the chine, oneburner for each side of the fabric. web toward the Wedge area, i th diti of Other objects and advantages of the invention tmVeL carries tflame along, and Wedges it yet will be apparent from the followingdescription more against th f bric, nd th o p nyin dr w form n a partThe lower portion 22 of the body 3 is inclined hereof and in which:

to the outer walls It and II and has a semi-cir- 3 cular bottom wall 23with inclined parallel side walls 24 and 25, Figure 8. The right sidewall of the upper body angles back to form a baflle 26. The lower bodychamber receives a completely combustible mixture of air and fuel fromboth ends through pipes 21, as shown in Figure 1. The semi-circularbottom wall has a plurality of valves 28 angularly mounted therein ateach end of the burner which, when open, admit the coinbustible mixtureto intermediate chambers 26. These chambers are separated by partitions38 which permit the use of the burner for wide or narrower webs,depending upon the opening of the valves 28. These valves close openings29, Figure 7, in the partition 30 between the fuel chamber 23 andintermediate chambers 2|. As shown there are six of these valves. Thepartition 30 extends at right angles to the inclined side walls and 25with bafiie 2 5 opposite opening 29. V

The combustion mixture is fed under pressure through openings 29, and asit comes through at right angles to the partition 3%, the mixturestrikes the bafile 25 opposite thereto of intermediate chambers 2 i andflattens out, spreading with equal pressure throughout the compartmentof each of the chambers 2!, so that pressure on the plate It is even,for all the orifices thereof.

Between the most central partitions 3B of the burner are smalleropenings 3! closely spaced along the length of the central section ofthe partition 3B. As shown in Figure 8 these openings are located at theuppermost portion of the partition at the juncture thereof with theinclined side wall 25 and are drilled at the maximum possible angle tothe orifice plate It. The combustion mixture is thus directed to theright and not parallel to the orifices in the plate 15. It has beenfound in practice that this arrangement effectively prevents blowing ofthe mixture through the orifices.

As seen in Figure '7, the brackets 4 and 5 are fastened to the bodythrough flanges 32 thereof by means of bolts 33. The brackets havegrooves or channels as cut therein to reduce contact of the bracketswith the bricks I and 2. This reduction of contact minimizes heattransfer between the brackets and bricks to aid in maintaining thebrackets at a sufliciently low temperature to preclude injury to thecloth and to aid in maintaining the heat of the bricks. The lugs 35 ofthe burner body to which flanges 32 are bolted arespaced and cut downthe heat transfer to the burner and prevent warping thereof, as dogrooves 34 in the burner body, and also ribs 4' and 5 prevent warping ofthe supports 4 and 5.

The fabric indicated by reference numeral 36 rides on the rounded edgesor supports 3'! of the brackets 4 and 5 projecting above the surfaces l2and I3 of the bricks. The flame is completely out off from following thecloth by these projecting edges 31. The forward edge which is contactedsecond by the fabric web may be said to wipe the flame from the cloth.It will be apparent that the cloth may travel in either directiontransversely across the burner.

It will be seen that the burner of this invention holds the fabric therequired distance from the beds by means of smooth machined edges whichwill not snag the cloth. A close regulation of the flame is permitted bythe valves admitting the combustible mixture to the burner so thatcontrol of the extent of the singeing operation is always obtainable.

What is claimed as new and is desired to be secured by Letters Patentis:

1. A burner to singe a fabric web drawn thereover comprising anelongated metallic air cooled burner having a burning face, a centralbody member, an elongated burner orifice plate spaced inwardly in thebody member from the face, metallic supports on the body member spacedlaterally and outwardly from the orifice plate and parallel thereto oneach side thereof, the supports having outer edges lying in a planeparallel to the orifice plate and spaced outwardly from the burningface, refractory beds forming the burning face and supported by andbetween the body member and the metallic supports, the beds at theirouter edges adjacent the supports being spaced inwardly from the planethrough the said edges of the metallic supports, and then slopingstraight inwardly toward the body member forming a broad V-shapedcombustion area bounded at its outer sides by said metallic supports,the

supports together forming a clamp to hold the beds in the burner andagainst the body member, and means to supply a completely combustiblemixture to the orifices of said orifice plate, the burner and beds beingadapted to have a fabric web drawn transversely thereover, formingtherebetween a substantially closed combustion singeing chamber, theflame from the burner being spread to both sides of the burner, thesupports being adapted by contact therewith to space the web from thebeds and to confine the flame between the supports, the sloping bed lastopposite a passing web squeezing the flame closely against the web andthe adjacent metallic support edge wiping the flame from the web.

2. The burner of claim 1 including a plurality of substantially spacedlugs extending from each side of the body member to the metallicsupports and to which the supports are connected, the lugs being spacedfrom the refractory beds, whereby air may circulate between the beds andlugs.

3. The burner of claim 1 including a plurality of ribs extendinglongitudinally of each metallic support, between the support and therefractory beds, to support the beds on th ribs and space the beds fromthe supports.

4. A burner to singe a fabric web drawn there over comprising anelongated burner having a burner body, a burning face thereon, anelongated burner orifice plate on the burner body spaced inwardly fromand longitudinally centrally in the burning face, metallic supports onthe burner body spaced laterally and outwardly from the orifice plateand parallel thereto on each side thereof, the supports having edgeslying in a plane parallel to the orifice plate and spaced from theburner body, outwardly from the burning face, refractory beds formingthe burning face and supported by and between the burner body andmetallic supports, the burner body having therein a fuel chamber and achamber intermediate between the fuel chamber and the orifice plate, thebody forming walls for said chambers, a partition angularly disposedwith respect to said plate, between the fuel and intermediate chambers,having laterally directed orifices therein, valves in said orifices tocontrol the flow of fuel therethrough, one wall of said intermediatechamber extending in front of the orifices in said partition,constituting a longitudinally extending baiile to break the direct flowof fuel from the valves to the orifice plate.

5. The burner of claim 4 in which the beds are spaced inwardly from theplane through the edges of the metallic supports and form a combustionarea bounded at its outer sides by said metallic supports, the supportstogether formin a clamp to hold the beds in the burner and against theburner body.

6. A flame compression burner adapted to have a fabric to be singedpassed thereover comprising an elongated burner having a burner body, aburning face thereon, an elongated burner orifice plate on the burnerbody spaced inwardly from the burning face, a pair of beds havingsurfaces of refractory material forming the burning face, one on eachside of said plate, and sloping in opposite directions outwardly inV-formation from the plate, the burner body having therein a fuelchamber and a chamber intermediate between the fuel chamber and theorifice plate, the body forming walls for said chambers, a partitionangularly disposed with respect to said plate, between the fuel andintermediate chambers, having laterally directed orifices therein,valves in said orifices to control the flow of fuel therethrough, onewall of said intermediate chamber extending in front of the orifices insaid partition constituting a longitudinally extending bafile to breakthe direct flow of fuel from the valves to the orifice plate.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 1,594,744 Moore Aug. 3, 1926 1,807,703 Osthoff June 2, 19312,203,087 Hanson June 4, 1940 2,410,542 Kemp Nov. 5, 1946 2,427,545Berger Sept. 16, 1947 2,464,333 McGlaughlin Mar. 15, 1949 2,536,609 Kempet a1 Jan. 2, 1951

